| Preface | 5 |
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| Contents | 7 |
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| 1 Friction, Wear, and Lubrication in the Bearing Application | 13 |
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| 1.1 Basic Concepts of the Tribology | 13 |
| 1.1.1 Basic Definition of the Bearing Tribology | 13 |
| 1.1.2 Objects and Tasks of the Bearing Tribology | 14 |
| 1.1.2.1 Bearing Friction and Wear Mechanisms | 15 |
| 1.1.2.2 Bearing Lubrication Theory | 15 |
| 1.1.2.3 Bearing Tribology Research Method and Test Technology | 15 |
| 1.1.2.4 Bearing Material and Surface Treatment | 15 |
| 1.1.2.5 Bearing Lubricant | 16 |
| 1.1.2.6 Performance Monitoring for Bearing in the Mechanical Equipments | 16 |
| 1.1.3 Subject Characteristics of the Bearing Tribology | 16 |
| 1.2 Bearing Friction and Wear | 17 |
| 1.2.1 Sliding Friction and Rolling Friction | 17 |
| 1.2.1.1 Sliding Friction | 17 |
| 1.2.1.2 Rolling Friction | 17 |
| 1.2.2 Types of Bearings | 18 |
| 1.2.2.1 Plain Bearings | 18 |
| 1.2.2.2 Rolling Bearings | 18 |
| 1.2.3 Friction and Wear in the Bearing Application | 19 |
| 1.2.3.1 Friction and Wear in the Plain Bearings | 19 |
| 1.2.3.2 Friction and Wear in the Rolling Bearings | 19 |
| 1.3 Bearing Lubrication | 19 |
| 1.3.1 Plain Bearing Lubrication | 20 |
| 1.3.2 Rolling Bearing Lubrication | 20 |
| References | 20 |
| 2 Bearing Surface Contact | 21 |
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| 2.1 Surface Structure and Property | 21 |
| 2.1.1 Surface Structure | 21 |
| 2.1.2 Surface Property | 23 |
| 2.1.2.1 Surface Energy | 23 |
| 2.1.2.2 Surface Film | 24 |
| 2.1.2.3 Surface Oxidation | 25 |
| 2.2 Surface Morphology Parameters | 26 |
| 2.2.1 Surface Geometry | 26 |
| 2.2.2 Surface Morphology Parameters | 27 |
| 2.2.2.1 One-Dimensional Topography Parameter | 27 |
| 2.2.2.2 Two-Dimensional Topography Parameter | 28 |
| 2.2.2.3 Three-Dimensional Topography Parameter | 28 |
| 2.2.2.4 Support Surface Curve | 29 |
| 2.2.3 Surface Morphology Statistical Parameters | 29 |
| 2.2.3.1 Height Distribution Function | 30 |
| 2.2.3.2 Distribution Curve Deviation | 30 |
| 2.3 Hertz Elastic Contact | 30 |
| 2.3.1 Contact Between Two Cylinders | 31 |
| 2.3.2 Contact Between Two Balls | 33 |
| 2.3.3 Rough Surface Contact | 34 |
| 2.3.3.1 Unimodal Contact | 34 |
| 2.3.3.2 Contact Between Ideal Rough Surfaces | 35 |
| 2.3.3.3 Contact Between Real Contact Surfaces | 37 |
| 2.3.4 Plasticity Index | 39 |
| 2.4 Heating Effect of the Surface Contact | 40 |
| 2.4.1 Static Heat Source | 40 |
| 2.4.2 Dynamic Heat Source | 41 |
| 2.4.3 Sliding Heat | 42 |
| 2.4.4 Rolling Heat | 44 |
| 2.5 Contact Problems in the Bearings | 44 |
| 2.5.1 Rolling Bearing Contact | 44 |
| 2.5.1.1 Point Contact | 44 |
| 2.5.1.2 Line Contact | 45 |
| 2.5.1.3 Contact Model in Roller Bearing | 46 |
| 2.5.2 Plain Bearing Contact | 48 |
| 2.5.2.1 Line Contact | 48 |
| 2.5.2.2 Surface Contact | 48 |
| 2.5.3 Contact Stress Between Rolling Element and Raceway | 49 |
| 2.5.4 Contact Stress Between Rolling Element and Rib | 49 |
| References | 50 |
| 3 Mechanism of Bearing Friction and Wear | 51 |
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| 3.1 Sliding Friction Mechanism | 51 |
| 3.1.1 Sliding Friction Characteristics | 51 |
| 3.1.2 Basic Friction Theory | 53 |
| 3.1.2.1 The Mechanical Interlocking Theory (Concave–Convex Theory) | 53 |
| 3.1.2.2 Molecular Interaction Theory (Molecular Adhesion Theory) | 54 |
| 3.1.2.3 Mechanical-Molecular Friction Theory | 55 |
| 3.1.3 Adhesion Friction Theory | 55 |
| 3.1.4 Friction Binomial Law | 62 |
| 3.2 Rolling Friction Mechanism | 63 |
| 3.2.1 Micro-Slip Effect | 63 |
| 3.2.2 Elastic Hysteresis | 64 |
| 3.2.3 Plastic Deformation | 64 |
| 3.2.4 Adhesion Effect | 65 |
| 3.2.5 Rolling Friction Calculation | 65 |
| 3.2.6 Rolling Friction Law | 66 |
| 3.3 Wear Mechanism | 67 |
| 3.3.1 Wear Classification | 67 |
| 3.3.2 Wear Mechanism | 68 |
| 3.3.2.1 Adhesive Wear Mechanism | 68 |
| 3.3.2.2 Abrasive Wear Mechanism | 71 |
| 3.3.2.3 Fatigue Wear Mechanism | 73 |
| 3.3.2.4 Corrosive Wear Mechanism | 76 |
| 3.3.2.5 Fretting wear Mechanism | 78 |
| 3.4 Wear Calculation | 79 |
| 3.4.1 Wear Representation | 79 |
| 3.4.2 Abrasive Wear Calculation | 79 |
| 3.4.3 Adhesive Wear Calculation | 80 |
| 3.4.4 IBM Wear Calculation | 81 |
| 3.5 Wear Law in the Practical Design | 83 |
| 3.5.1 Friction Pair Material Selection Rules | 83 |
| 3.5.2 Protective Layer Principle and Wear-Resisting Layer Design Criteria | 85 |
| References | 88 |
| 4 Materials for Bearing Frictional Pairs | 89 |
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| 4.1 Sliding Bearing Material | 89 |
| 4.1.1 Babbitt Alloy | 90 |
| 4.1.2 Copper Alloy | 93 |
| 4.1.3 Aluminum Alloy | 94 |
| 4.1.4 Gray Cast Iron, Wear Resistant Cast Iron and Nodular Graphite Iron | 96 |
| 4.1.5 Porous Metallic Materials | 96 |
| 4.1.6 Nonmetallic Materials | 97 |
| 4.1.6.1 Engineering Plastic | 97 |
| 4.1.6.2 Carbon-Graphite | 97 |
| 4.1.6.3 Rubber | 99 |
| 4.1.7 Graphite–Metal Alloy | 99 |
| 4.2 Rolling Bearing Material | 99 |
| 4.2.1 Steels for Rings and Rolling Elements | 100 |
| 4.2.2 Other Materials of the Rolling Bearings | 107 |
| 4.2.3 Bearing Steel Selection Principle | 109 |
| References | 110 |
| 5 Sliding Bearing Lubrication Theory | 112 |
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| 5.1 Lubrication Condition | 112 |
| 5.2 Hydrodynamic Lubrication | 114 |
| 5.2.1 Fluid Lubrication Basic Equation | 114 |
| 5.2.2 Reynolds Equation | 116 |
| 5.2.2.1 Reynolds Equation General Formula | 116 |
| 5.2.2.2 Simplification of the Reynolds equation | 118 |
| 5.2.3 Flow Equation and Shearing Stress Equation | 121 |
| 5.2.3.1 Flow Equation | 121 |
| 5.2.3.2 Shear Stress Equation | 122 |
| 5.2.3.3 Application of Reynolds Equation | 123 |
| 5.3 Design and Calculation of Hydrodynamic Sliding Bearing | 123 |
| 5.3.1 Tapered-Land Thrust Bearing | 124 |
| 5.3.1.1 Single Bevel Bush | 124 |
| 5.3.1.2 Multiple Bushes | 126 |
| 5.3.2 Ladder Bearing | 126 |
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